Answer:
y = 3/4
Step-by-step explanation:
Answer:
x = 21
Step-by-step explanation:
3x = 16 * 4 = 64
x = 64/3
x = 21
Answer:
3.8
Step-by-step explanation:
h(t) = -4.9 t² + v₀ t + h₀
Given that v₀ = 0 and h₀ = 70:
h(t) = -4.9 t² + 70
When the rock hits the ground, h(t) = 0.
0 = -4.9 t² + 70
4.9 t² = 70
t² = 14.3
t = 3.8
The rock hits the ground after 3.8 seconds.
Yeah i don’t know either sorry
It’s B thanks can I have brainliest I love u